2023
DOI: 10.3390/membranes13030347
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Donnan Dialysis for Recovering Ammonium from Fermentation Solutions Rich in Volatile Fatty Acids

Abstract: For the production of polyhydroxyalkanoates (PHA) using nitrogen-rich feedstocks (e.g., protein-rich resources), the typical strategy of restricting cell growth as a means to enhance overall PHA productivity by nitrogen limitation is not applicable. In this case, a possible alternative to remove the nitrogen excess (NH4+/NH3) is by applying membrane separation processes. In the present study, the use of Donnan dialysis to separate ammonium ions from volatile fatty acids present in the media for the production … Show more

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Cited by 4 publications
(1 citation statement)
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“…In the DD process, an ion-exchange membrane separates a compartment containing the solution to be treated (feed) from a compartment containing the solution that receives the target ions (receiver). The concentration gradients of the ions transported through the membrane (counter-ions) control the ion-exchange kinetics [9,10]. The DD process involves the stoichiometric exchange of counter-ions, or ions with the same charge, over an ion-exchange membrane, and it is ended when Donnan equilibrium is attained [11].…”
Section: Introductionmentioning
confidence: 99%
“…In the DD process, an ion-exchange membrane separates a compartment containing the solution to be treated (feed) from a compartment containing the solution that receives the target ions (receiver). The concentration gradients of the ions transported through the membrane (counter-ions) control the ion-exchange kinetics [9,10]. The DD process involves the stoichiometric exchange of counter-ions, or ions with the same charge, over an ion-exchange membrane, and it is ended when Donnan equilibrium is attained [11].…”
Section: Introductionmentioning
confidence: 99%